Characterisation of undoped and doped isomeric o,m,p-polyphenylenes by -X-Ray, FTIR and electrical conductivity measurements

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Isomeric o, m, p-polyphenylenes were prepared by oxidation-cationic polymeriation of biphenyl with various proportions of the polymerization components biphenyl-AlCl3-Cu-Cl2. The insoluble fraction in chlorobenzene was separated. The insoluble polyphenylenes were then doped with anhydrous FeCl3, AlCl3, and SnCl4 in solutions of acetonitrile (ACN), nitrobenzene (N), and acetone (A). X-ray diffraction, Fourier Transform Infrared Spectroscopy (FTIR), and electrical conductivity measurements were carried out to characterize the undoped and doped materials. Some of the o, m, p-polyphenylenes had semiconductive properties after doping depending on the proportion of biphenyl-AlCl3-CuCl2 and the doping system (dopant and solvent).

Bibliographic note

Funding Information: The authors would like to thank the German-Greek Committee on Science and Technology for the financial support of the corresponding project “Semiconductive Organic Polymers.”


Original languageEnglish
Pages (from-to)175-183
Number of pages9
JournalInternational Journal of Polymer Analysis and Characterisation
Issue number3
Publication statusPublished - 1 Nov 1995


  • Doping, Electrical conductive polymers, Polyphenylenes